Vacuum Pumps Installing a Variable Speed Drive (VSD), sometimes called a variable frequency drive, usually saves between 50 and 65% in electrical 
power costs with the same or better regulation of vacuum. The range of energy savings could be from 30 to 80 percent. They can be adapted to blower or in some cases rotary vane type vacuum pumps. They Energy-Conserving Vacuum Pump function by changing the rate of the vacuum pump predicated on the reading from a pressure sensor that's installed on the vacuum series near the receiver jar. The VSD is actually a dedicated computer with many adjustments therefore it could be possible to improve vacuum regulation over the typical pneumatic vacuum regulator that just has a vacuum level adjustment. A VSD for vacuum pressure pump is usually economical for a dairy that milks a complete of 8 hours or more per day. Typically a VSD will not be a cost-effective option for small dairies due to less milking time and thus shorter vacuum pump operate times but there are several other choices to save lots of energy costs.
